Subclavian nerve

Origin The subclavian nerve is a branch of the upper trunk of the brachial plexus. It contains axons derived from the ventral rami of the C5 and C6 cervical spinal nerves. The origin is situated within the posterior triangle of the neck.'''''' Course Descending, it passes anterior to (the 3rd part of) the subclavian artery and vein.''' The accessory phrenic nerve may rather branch from the C4 or C6 segments or ansa cervicalis. This nerve usually joins with the phrenic nerve before innervating the diaphragm, ventral to the subclavian vein. == Function ==

The subclavian nerve innervates the subclavius muscle. ==Additional images==

File:Brachial plexus.svg|Diagram of the brachial plexus. The subclavian nerve can be seen branching from where C5 and C6 join to form the upper trunk. (Label at top right). File:Gray809.png|The right brachial plexus. The subclavian nerve is not visible, but the muscle it innervates called the subclavius can be seen underneath the clavicle. == References ==